Introduction: B.A.R. (Instructions)

Picture of B.A.R. (Instructions)

This is the instructable for my B.A.R. It is fun to shoot and is powerful. Please rate, comment, and SUBSCRIBE. It only takes one second to push the button!

Here is the part list. Thanks to headlessknight for making it.


YELLOW ---- 44
WHITE ---- 32
GREEN ---- 16
RED ---- 32
ORANGE ---- 60
DARK GREY ---- 24


WHITE ---- 61
BLUE ---- 26
GREY ---- 2


Y CLIPS ---- 10


Step 1: The Gun.

Picture of The Gun.

Here you will build the body of the gun.

Image 1 : Make these pieces.
Image 2 : Here is a view of the mechanism.
Image 3 : Here is another view of the mech.
Image 4 : Put the panel from image 1 on the stuff you just made. Add the green rods were they are shown.

You're done with this step.

Step 2: The Magazine.

Picture of The Magazine.

Here you will build the magazine.

Image 1 : Build these pieces.
Image 2 : Put the magazine together. Be sure to add the mag pusher rubber band.
Image 3 : This is how the bullets are loaded in.

Step 3: You're Done!

Picture of You're Done!

Thanks for building the B.A.R. Please SUBSCRIBE. Also, post a picture of your gun, and I will put a picture of it in my instructable to show who has built it. 

Step 4: Who Has Built It.

Picture of Who Has Built It.

The first picture is the headlessknight's awesome modded version of my gun. The next one is the B.A.R. that BleSam112233 made.


The Knex Inventor (author)2016-06-24

Awesome gun! Is this a railgun?

Thank you for the kind words! Sorry I replied so late; I haven't been checking Instructables lately. Yes, it is a railgun. It uses a unique system that I came up with. It's an interesting concept; I should probably revisit it some time.

Neat! I will try to make time to build it soon.

Lucas The Boss (author)2014-05-02

This thing took a lot more pieces than it looks I thought I would not have to take apart my crossbow I was working on but I have built crossbows before this is the first bull pup I've ever built, it is kind of pointless but it does look pretty cool
It shoots pretty good for a pin gun overall its a pretty good gun

BleSam112233 (author)2013-06-19

I built it! Please post these pics of my B.A.R. to this step! Pics:

BleSam112233 (author)2013-06-18

4 more orange connectors!!!! ARRG! I already built the gun.... but..... 4 MORE FREAKING CONNECTORS!

Knex.X (author)2013-02-09

Wether it is one layer of tape or more, the friction is enormous, I removed it and now it works fine, I'm
afraid the pin will break though.

Does the FP go back behind the stock?

No, the firing pin doesn't go behind the stock because it uses a rail system. If you look closely at the third picture of the first step, you can see the firing pin. The firing pin is the short thing near the front of picture that has tape on it. It slides in rails, so it doesn't need to be a long firing pin. This is a good design for bullpups, because it is a lot more compact than the normal firing pin system.

Ah, I see, thanks for shedding some light on that.

No problem.=D

BTW, how do you like my new profile picture?

Element Force (author)2012-08-12

yes but i dont have enough green rods for the mag and i build the gun... Doh

If you have any other guns built, then you could get some green rods from them. Or, if this is the only gun you have built, then you could try to slim the gun down a little and get green rods from that.

yes i tried but i can not...i build a nother gun insted

That's too bad you didn't have enough pieces. What was the other gun you built?

i build your crossbow and its awsome

Thanks! =D Are you talking about the H.A.B.C. ?

yes and i mod it. your crossbow is awsome

Cool. Could I see some pictures of your modded crossbow?

sorry but my mom dont want i use her camera :(

Element Force (author)2012-08-12

can i replace the ball socket by a grey 1 slot connecter and i add tape on.

Yes, you can do that.

Element Force (author)2012-08-12

remouvable mags or not?

Yes, they're removable. They are also top loading magazines with internal magazine pushers.

didexo (author)2012-04-14

Is it worth it?

~KnexBuild~ (author)didexo2012-04-14

It is a very good gun, and I would say it's worth it. =D

~Meme~ (author)2012-04-03

Sorry, my SD cards full. I may have over exaggerated. Its just that the bolt KILLS your hand to pull back, and always flies off when you fire it. I spent nearly all day on and off fixing it. I can probably post internals of mine on Thursday (I added some mods to make it more reliable). Can you give me any suggestions to fix it. Also, have you seen oodalumps guide to performance knex guns?

Thanks allot

It looks fantastic

~KnexBuild~ (author)~Meme~2012-04-03

The bolt always flys off when you fire it? That's never happened when I had the gun. On image 4 of step 1, look at the image note that says, "Add this thing here to strengthen the gun". Did you build that piece? Also, be sure to put one of those on the other side of the gun also. Did you put tape on the firing pin?
Yes, I have seen oodalump's guide to performance K'nex guns.

~Meme~ (author)~KnexBuild~2012-04-03

Going to post a pic of it tomorrow! I've added some mods to the slide where the green rods are, i added electrical tape to stop the green rods poking through.

I have also added a strap and a sight.


~KnexBuild~ (author)~Meme~2012-04-03

It sounds really cool! =D

~Meme~ (author)~KnexBuild~2012-04-04


~KnexBuild~ (author)~Meme~2012-04-04

no problem.

~Meme~ (author)2012-04-02

Going to build!

~KnexBuild~ (author)~Meme~2012-04-02


~Meme~ (author)2012-04-02

Its Horrible. Sorry.

~KnexBuild~ (author)~Meme~2012-04-02

This is horrible? This was one of my best guns. Can you show me a picture so I can see if you built it wrong.

Vortus (author)2012-03-29

Have you considered increasing the length of the ram, and trying to get the elastics lower on the ram? both those would reduce friction considerably and add stability. The only sacrifice would be a slightly increased length.

~KnexBuild~ (author)Vortus2012-03-29

Do you mean by increasing the length of the ramrod? A heavier ramrod would be less efficient than a light one. Also, I don't have this anymore, because I broke this.

daredevil499 (author)2012-03-26

nice gun i am going to try to build it

~KnexBuild~ (author)daredevil4992012-03-26

Thanks! Show me a picture of it if you do build it. Also, thanks for the sub!

daredevil499 (author)~KnexBuild~2012-03-26

i'll try to add a picture,

~KnexBuild~ (author)daredevil4992012-03-26

You built it?

daredevil499 (author)~KnexBuild~2012-03-26

no but i'm in the process of doing so.

~KnexBuild~ (author)daredevil4992012-03-26


daredevil499 (author)~KnexBuild~2012-03-27

i'm having trouble with the insides of the gun so i'm going to try and build your H.A.B.C

~KnexBuild~ (author)daredevil4992012-03-27

What part was to hard to make? I thought that the pictures were easy to follow. Yeah, my H.A.B.C. is a powerful gun.

daredevil499 (author)~KnexBuild~2012-03-28

2 and 3rd picture of step 1. also when i was building it i wasn't able to build by the computer now i can so i'll try again

~KnexBuild~ (author)daredevil4992012-03-28

The 2nd and 3rd pictures are blurry? I hope you do get to finish the gun, because it is a fun to shoot and it is a powerful gun.

daredevil499 (author)~KnexBuild~2012-03-28

no there not blurry. i used to have to look at the picture then go build some come back and repeat. and that's hard. I can use knex at the computer now so i will try to finish. I am also building your H.A.B.C right now.

About This Instructable




Bio: I like Minecraft, Medieval architecture (primarily castles), K'nex guns, and things that explode. Be sure to check out my K'nex guns and SUBSCRIBE!!!
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